Boiler construction



June 26, T928.

v M. ODONNELL BOILER CONSTRUCTIQN Filed July 29, 1926 3 Sheets-Sheet 1 INVENTOR ZJHZ'C/MEL ODmVNELL ATTORNEYS June 26, 1928. 1,675,194

7 M. ODONNELL BOILER CONSTRUCTION Filed July 29, 1926 5 Sheets-Sheet 2 I WITNESSES I INVENTOR m i MICHAEL 0 balm/ELL I BY I a W Y ATTORNEYS June 26, 1928.

M. ODONNELL BOILER CONSTRUCTION Filed Ju1y 29, 1926 3 Sheets-Sheet 3 INVENTOR May/15L ODOJVNELL WITNESSES ATTORNEYS Fatented June 26, 1928.

UNITED STATES PATENT OFFICE.

MICHAEL ononunrn. or LONG ISLAND CITY, new sonic; ELLEN o'noNNELi. ISTRATRIX or sari) MICHAEL o no vnrirr, nncnasnn. I

BOILER CONSTRUCTION;

This invention relates to the class of boilers or furnaces, and has particular reference to boilers and furnaces used for heating dwellings. i

The principal object of the present invention is to provide a boiler or furnace of the indicated character with an outer wall structure to define a heat chamber in communication with the combustion chamber and the usual uptake and other fines, to the end'that gases of combustion will be caused to properly travel or circulate in the presence of a comparatively greater heating surface, resulting in greater thermal elliciency and economy in the use of fuel.

With the foregoing, other objects of the invention will appear from the embodiment of the invention which by way of example is described in the following specification and illustrated in the accompanying drawings, in which I Figure 1 is a sectional elevation of a boiler embodying the present invention.

Fig. 2 is a sectional view. taken on the line 2 '-2 of Fig. 1 and looking in the direction indicated by the arrows.

Fig. 3 is a horizontal sectional view taken substantially on the line 33 of Fig. 2.

The illustrated embodiment of the present invention is practiced in conjunction with a sectional boiler of a certain type which will be hereinafter described in a general way to give an understanding of the invention, and it is to be understood that the invention may be practiced with other types of boilers or furnaces used for heating purposes.

The boiler is made up of sections and essentially includes by virtue of the structural features thereof, a combustion chamber 10, uptakes 11 which communicate respectively with lines 12, and the latter communicating with a flue 18, as at 14. The walls of each of the sections provide the usual Water space 15.

In accordance with the present invention the boiler is provided with an outer) wall structure 16 which defines a heat chamber 17 indirectly in communication with the combustion chamber 10. The heat chamber has provided therein a baffle or dividing wall 18 which combines with the wall structure 16 to define an upper heat section and a lower heat section which communicates with the upper heat section at 19 at each side. The heat chamber 17 defined by the wall struc- 1926. Serial No. 12.5,;83.

ture 16 occurs over the top, site sides of the boiler. will be, a top space 2.0., a back space 21, and side spaces 22. The rear Wall section of the structureI16v has an outl t 23 to which the ADMIN- back and oppo; Therefore, there chimney flue is connected. The balflle or dividing wall-18 is substantially U-shaped in plan and is arranged below the outlet 23 and above the fiue13 at the rear. A leg of the battle 18 extends substantially horizonminates short of the front wall section of The rear leg of the baffle 18 consists of portions which slope downwardly from the outlet 23.

In order to make provision for cleaning 06 tally in each of the sidespaces 22 andterout the heat chamber 17, the heat chamber 11 at the bottom thereof at the back and sides is provided with clean-out doors 24, each of which is-hinged ly connectedas at 25 and held in a closed positionby suitable latching devices '26. Clean-out openings closed by removable covers 27 are provided which give access to the lower section of the heat chamher so that brushes or other cleaning implements may be wielded-in the chamber to remove the, products of combustion which maybe dropped out by Opening" the door 24.

When the combustion chamber 10 is fired,

the gases of combustion will issue from the combustion chamber, pass upwardly through the up-takes 11 to the flues 12, will travel forwardly of the fines 12 to the flue 13, then rearwardly in the flue 13 to a point beneath the sloping portions of the baflie 18 which direct the gases downwardly and laterally of the back space 21. From the back space 21 the heat travels forwardly in the side spaces 22 and upwardly through the passages 19 to the top space 20 and thence'rearwardly therein to the back space above the balfle 18 out through the outlet 23. The particular arrangement of heat spaces is such that a ready circulation of the gases of combustion or heat is possible, and due to the fact that the heat travels in the presence of a comparatively greater heating surface, there is obtained a greater thermal. efliciency and a saving in fuel as well.

The outer surfaceso-f the wall structure 16 are coveredwith suitable heat insulating material 28 of any preferred kind to prevent unnecessary loss of heat by radiation. Means may be provided for blowing the soot which collects in the space 20, 22 into the back of the boiler. I have illustrated the use of an approximately inverted U- shaped steam pipe overlying the boiler where it may be removed, through the door 24. The soot blower is operated whenever cleaning becomes necessary. I claim:

1. A boiler characterized by an outer Wall structure defining a heat chamber, and a bafflewallin the heat chamber dividing the same into an uppersection and a lower section in communication with the upper section, the upper section in communication with the chimney flue, and the lower section in communication with the combustion chamber, said last communication including rip-take flues. I V

'2. A boiler characterized by a heat insulated outer wall structure defining a heat chamber extending around the top, back and sides of the boiler, a battle wall in the heat chamber dividing the same into an upper section and a lower section in communication with the upper section, the upper section in communication with the chimney flue, and the lower section in communication bafllie wall in the with the combustion chamber, said last communication including up-take flues.

3. A boiler characterized by an outer wall structure definin lieat chamber dividing the same into an upper section and a lower section in communication with the upper section, the upper section in communication with the chimney flue, and the lower section in communication with the combustion chamber, said last communication including up-take flues, said wall structure including clean-out closures. i

4. A boiler characterized by an outer wall structure defining a heat chamber at the top, back and sides of the boiler, a bafile extending in the back and sides of the heat chamber which divides the heat chamber into an upper section consisting of the top andportions respectively of the back and side of the heat chamber defined, a lower section consisting-of portions respectively of the back and the sides of the heat chamber defined, the lower section in communication with the upper section, the upper section in communication with the chimney flue above the baffle, and the lower section in communication with the combustion chamber, said last communication including up-take fines, the heat issuing from the combustion chamber passing through said up-take flues, then to the back of the heat chamber below the baffle, then downwardly and laterall to the sides, then forwardly 1n the sides, tienv upwardly to the top, then rearwardly in the top, and finally out through the chimney flue. a

- MICHAEL ODONNELL.

a heat chamber, and a 

